H567/03 Section A - Szasz (2011): the myth of mental illness

The prescribed essay and chronology

The prescribed source is Thomas Szasz's “The myth of mental illness: 50 years later”, published in The Psychiatrist, 35, 179–182, in 2011. It revisits his 1960 essay and 1961 book of similar title. The 2011 article developed a plenary address delivered in Edinburgh in June 2010. These are different publications and events, not dates for one experiment.

Szasz challenges both treating disturbed behaviour as bodily disease and using that interpretation to justify involuntary intervention. The article is a conceptual and historical critique, especially of US psychiatry. It does not recruit an experimental sample, manipulate an independent variable or report a new numerical treatment effect. Its evidence consists of definitions, selected historical developments, quotations and examples. A description of the key research must therefore reconstruct the argument rather than invent a participant procedure.

The article proceeds through changes in US mental healthcare, whether mental illness is a medical or legal concept, the claim that it is a metaphor, and a reconsideration of his earlier work. This organisation helps identify his reasoning and the kinds of evidence it would take to assess it.

Calling the source a critique does not make its claims automatically correct or worthless. A conceptual argument can expose hidden assumptions; empirical conclusions about causes, outcomes or contemporary services still require appropriate evidence.

Disease definition and metaphor

Szasz's central conclusion depends on what he allows the word “disease” to mean.

He adopts a pathological definition involving structural or functional alteration of cells, tissues or organs. On that definition, calling problematic behaviour a mental illness is metaphorical rather than identifying a bodily disease. If a supposed mental illness is later shown to involve a tumour or another bodily condition, he treats the earlier label as a misdiagnosis of bodily illness, rather than confirmation that mental illness is a class of brain disease. He presents this as a conceptual conclusion, not a new experimentally tested discovery.

This distinguishes an argument about categories from an empirical causal claim. A critic might accept that distress is real while questioning whether disease must be defined in Szasz's restricted way. Absence of one known lesion does not establish the absence of interacting biological and psychological processes. Conversely, observing a neural correlate does not establish that every diagnostic category has one specific brain cause.

For an original example, a learner says, “If an SSRI reduces symptoms, Szasz's definition has been experimentally disproved.” Treatment response is relevant to the practical usefulness of medication, but it does not alone settle the meaning of a category or prove a simple disease mechanism. Evaluating the definition and testing treatment outcomes are related but different tasks.

Medicalisation and social labels

Szasz argues that classifications can reflect social judgements and institutional power as well as clinical observation.

Medicalisation means interpreting a difficulty or behaviour through medical categories and responses. In his account of US changes since the 1950s, boundaries between voluntary and involuntary care and private and public psychiatry became blurred, while state funding and responsibility for dangerousness strengthened medicine's connection with political authority. These broad statements are his portrayal of that historical setting; they are not a verified description of every country or service today.

He uses changing diagnostic labels, including the removal of homosexuality and the appearance of ADHD, to question whether the categories are purely discoveries of bodily disease. Homosexuality is not a mental disorder. The APA's 1973 decision removed homosexuality itself as a DSM diagnosis; later residual categories have their own chronology. Szasz interprets diagnostic change as evidence of social and political processes, but that interpretation alone cannot show that research evidence played no part or that all diagnoses are arbitrary.